Benchmark Run Result for: lodash merge vs object.assign vs spread overwriting one property

lodash merge vs object.assign vs spread overwriting one property

Date tested: one year ago

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Test name	Executions per second
lodash merge	6155501.0 Ops/sec
object.assign	12627836.0 Ops/sec
spread	40911312.0 Ops/sec

Benchmark definition (click to collapse):

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my' }; var c = _.merge({a:true}, a);
object.assign
var a = { a: 'oh', b: 'my' }; var c = Object.assign({a:true}, a);
spread
var a = { a: 'oh', b: 'my' }; var c = { a:true, ...a };

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